*
  margin 0
  padding 0
  box-sizing border-box
html, body
  width 100%
  max-width 100%
  min-width 100%
  height 100%
  max-height 100%
  min-height 100%
  overflow hidden
html
  font-size 16px
  background-color #fff
  font-family 'Microsoft YaHei'
body
  font-size 16px
a, a:hover
  text-decoration none
img
  border none
ol, ul, li
  list-style none
h1, h2, h3, h4, h5, h6
  font-weight normal
#app
  width 100%
  height 100%